Garnet
Cut Pyrope gemstone
Gneiss with garnet
Raw garnet crystal
Rare bright green Uvarovite Garnet
Gneiss with garnet, light micrograph
Almandine
Cut Spessartine gemstone
Garnet.
Colourful gemstones
Garnet gemstones
Garnet, variety Androdite
Cut Zircon gemstone
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Garnet gemstone
Spessartine garnet
Princess cut garnet
Round cut garnet
Garnet-bearing rock
Garnet crystals on schist
Garnet in peridotite
Snowball garnet, light micrograph
Demantoid garnet gemstone
Grossular garnet crystals on rock surface
Precious gemstones
Cut Cordierite (Iolite) gemstone
Cut Scapolite gemstone
Cut green Tourmaline gemstone
Cut pink Topaz gemstone
Uvarovite garnet crystals
Round cut red Andesine
Spessartite (garnet) crystals growing on albite
Garnet mica schist thin cut, polarised light micrograph
Emerald cut ruby
Cut Kyanite gemstone
Demantoid
Citrine gemstone
Mystic topaz gemstone
Almandine crystals in schist
Andradite crystals
Almandine mineral sample
Garnets in micaschist, light micrograph
Pyrope sand
Clinochlore with garnets
Wollastonite with kolophonite
Grossular crystals in host rock
Metamorphic rock
Grossular dodecahedral crystal
Andradite mineral
Peridotite
Kimberlite rock, light micrograph
Garnet gem
Cut Watermelon Tourmaline gemstone
Yellow-green Tourmaline rough
Lapis lazuli, SEM
Emerald
Deformation of garnet crystal
Grossularite Garnet crystals, Hessonite
Garnet, Concord, Vermont, USA
Garnet in Schist
Grossularite Garnet crystal
Almandine garnet in mica schist
Garnet, variety Uvarovite on diopside
Garnet in micaschist I
Cut pink topaz gemstone
Melanite
Hessonite
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Amphibolite, light micrograph
Cut Scapolite round gemstone
Citrine gemstones and crystal
Citrine gemstones
Rough pinkish-red Rubellite
Tourmaline cross section
Uncut emeralds
Cut yellow Vesuvianite gemstone
Cut Quartz gemstone
Yellow crystal
Citrine
Almandine crystals
Blue rectangular gemstone
Alexandrite gemstone
Grossular
Kelephytic corona, light micrograph
Eclogite rock, light micrograph
Spessartite crystals, Monroe, Connecticut
Grossular, Mexico
Andradite, New Jersey
Boudinage in dyke crossing serpentinite
Tourmaline on quartz
Prehnite and okenite
Concentric banding in agate
Tourmaline
Uvarovite Garnet
Cut Indicolite gemstone
Fire Opal
Tourmaline crystal, thin section
Black tourmaline, SEM
Melanite II
Melanite I
Red rectangular gemstone
Garnet Crystal Gemstone
Ruby in zoisite
Garnet in micaschist II
Orthogneiss, light micrograph
Diamond with garnet inclusion
Gemstones and light dispersion
Lherzolite rock, light micrograph
Tourmaline unworked stones
Tweezers holding alexandrite gemstone
Rubies
Purple rectangular gemstone
Pink rectangular gemstone
Amethyst gemstone
Diamond
Moonstone
Gold necklace and earrings, elevated view
Cut Diopside gemstone
Rose Quartz
Zircon crystals on host rock
Dendrites in agate
blue apatite
Sapphires
Tiger eye, light micrograph
Tiger eye, thin section micrograph
Tiger eye, polished surface
Lapis lazuli crystals I
Lapis lazuli crystals II
Tool holding diamond
Migmatite, light micrograph
Citrine crystal group
Sample of feldspar
Lizardite in serpentine rock
Barred olivine chondrule
Pallasite meteorite fragment
Agate
Chalcedony
Amethyst crystals
Aventurine
Quartz coated with silica
Stilbite crystal group
Axinite
Sample of muscovite
Chrysocolla mineral
Beryl crystals
Moss agate
Oval cut Apatite gemstone
Cut Fire Opal gemstone
Cut Ruby gemstone
Paragneiss, light micrograph
Migmatite
Sapphire gemstone
Amethyst gemstones